/// <summary>
///
/// </summary>
/// <param name="access"></param>
/// <param name="share"></param>
/// <param name="creationDisposition"></param>
/// <param name="flagsAndAttributes"></param>
public void Open(FileAccess access, FileShare share, FileCreateDisposition creationDisposition, int flagsAndAttributes)
{
uint dwDesiredAccess;
switch (access)
{
case FileAccess.Read:
dwDesiredAccess = 0x80000000;
break;
case FileAccess.Write:
dwDesiredAccess = 0x40000000;
break;
case FileAccess.ReadWrite:
dwDesiredAccess = 0xC0000000;
break;
default:
dwDesiredAccess = 0x20000000;
break;
}
var handle = NativeMethods.CreateFile(Name, dwDesiredAccess, (uint)share, 0, (uint)creationDisposition, (uint)flagsAndAttributes, 0);
if (handle == InvalidHandle)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
Handle = handle;
}
/// <summary>
/// Creates a new instance of the <see cref="SDKStream"/> class with an underlying SDK file stream
/// </summary>
/// <param name="filepath">Path to the file</param>
/// <param name="createDisposition">State how to create the stream</param>
/// <param name="access">File access type</param>
public SDKStream(string filepath, FileCreateDisposition createDisposition, FileAccess access)
{
if (filepath == null)
{
throw new ArgumentNullException(nameof(filepath));
}
ErrorHandler.CheckError(CanonSDK.EdsCreateFileStreamEx(filepath, createDisposition, access, out _Reference));
}
public static extern IntPtr CreateFile(
string fileName,
FileAccess desiredAccess,
FileShare shareMode,
ref SecurityAttributes securityAttributes,
FileCreateDisposition creationDisposition,
FileAttributes flagsAndAttributes,
IntPtr templateFile
);
public static IntPtr CreateFile(string fileName,
FileAccess desiredAccess,
FileShare shareMode,
FileCreateDisposition creationDisposition,
int flagsAndAttributes)
{
IntPtr hFile = IntPtr.Zero;
hFile = (IntPtr)CreateFileCE(fileName, (uint)desiredAccess, (uint)shareMode, 0, (uint)creationDisposition, (uint)flagsAndAttributes, 0);
if ((int)hFile == InvalidHandle)
{
throw new WinAPIException("Failed to Create File");
}
return(hFile);
}
public static IntPtr CreateFile(string fileName,
FileAccess desiredFileAccess,
FileShare shareMode,
FileCreateDisposition creationDisposition,
int flagsAndAttributes)
{
FileAccess2 desiredAccess;
switch (desiredFileAccess)
{
case FileAccess.Read:
desiredAccess = FileAccess2.Read;
break;
case FileAccess.ReadWrite:
desiredAccess = FileAccess2.Read | FileAccess2.Write;
break;
case FileAccess.Write:
desiredAccess = FileAccess2.Write;
break;
default:
desiredAccess = FileAccess2.Execute; //it will never get here and in fact Execute is never currently used. Left as a back door.
break;
}
IntPtr hFile = IntPtr.Zero;
hFile = NativeMethods.CreateFile(fileName, (uint)desiredAccess, (uint)shareMode, 0, (uint)creationDisposition, (uint)flagsAndAttributes, 0);
if ((int)hFile == InvalidHandle)
{
throw new System.ComponentModel.Win32Exception(Marshal.GetLastWin32Error(), "Failed to Create File");
}
return(hFile);
}
public static extern UInt32 CreateStreamEx(
string inFileName,
FileCreateDisposition inCreateDisposition,
Access inDesiredAccess,
out IntPtr outStream
);
public extern static UInt32 CreateStreamEx(
string inFileName,
FileCreateDisposition inCreateDisposition,
Access inDesiredAccess,
out IntPtr outStream
);
/// <summary>
///
/// </summary>
/// <param name="access"></param>
/// <param name="share"></param>
/// <param name="creationDisposition"></param>
/// <param name="flagsAndAttributes"></param>
public void Open(FileAccess access, FileShare share, FileCreateDisposition creationDisposition, int flagsAndAttributes)
{
uint dwDesiredAccess;
switch (access)
{
case FileAccess.Read:
dwDesiredAccess = 0x80000000;
break;
case FileAccess.Write:
dwDesiredAccess = 0x40000000;
break;
case FileAccess.ReadWrite:
dwDesiredAccess = 0xC0000000;
break;
default:
dwDesiredAccess = 0x20000000;
break;
}
var handle = NativeMethods.CreateFile(Name, dwDesiredAccess, (uint)share, 0, (uint)creationDisposition, (uint)flagsAndAttributes, 0);
if (handle == InvalidHandle)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
Handle = handle;
}
/// <summary>
/// Wrapper around the CreateFile API
/// </summary>
/// <param name="fileName">Path to the file or CE port name</param>
/// <param name="desiredAccess">Specifies the type of access to the object. An application can obtain read access, write access, read-write access, or device query access.</param>
/// <param name="shareMode">Specifies how the object can be shared.</param>
/// <param name="creationDisposition">Specifies which action to take on files that exist, and which action to take when files do not exist.</param>
/// <param name="flagsAndAttributes">Specifies the file attributes and flags for the file.</param>
/// <returns>Handle to the created file</returns>
public static IntPtr CreateFile(string fileName,
FileAccess desiredAccess,
FileShare shareMode,
FileCreateDisposition creationDisposition,
int flagsAndAttributes)
{
IntPtr hFile = IntPtr.Zero;
hFile =
(IntPtr)
CreateFileCE(fileName, (uint) desiredAccess, (uint) shareMode, 0, (uint) creationDisposition,
(uint) flagsAndAttributes, 0);
if ((int) hFile == InvalidHandle)
{
throw new WinAPIException("Failed to Create File");
}
return hFile;
}
